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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

INTERNAL MEDICINE SPECIALISTS MEDICAL GROUP, INC.
NPI 1366783268
Internal Medicine in Fresno, CA

Active since March 03, 2013
1515 E ALLUVIAL AVE, SUITE 101, FRESNO, CA 93720(559) 435-0339(559) 435-0853 Get Directions Write a Review

NPPES record last updated: October 23, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Internal Medicine Specialists Medical Group, Inc. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

INTERNAL MEDICINE SPECIALISTS MEDICAL GROUP, INC. (NPI 1366783268) is a healthcare organization registered as an internal medicine in Fresno, California and active in the NPI registry since March 2013. The organization lists Peter Edward Zaki, Co-owver, as its authorized official.

NPPES Registry Identity

NPI1366783268
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameINTERNAL MEDICINE SPECIALISTS MEDICAL GROUP, INC.
Location Address1515 E ALLUVIAL AVE, SUITE 101Fresno, CA 93720-3832
Mailing Address1515 E Alluvial Ave Ste 101Fresno, CA 93720-3832 · (559) 435-0339 · Fax (559) 435-0853
Phone(559) 435-0339
Fax(559) 435-0853
Organization SubpartNo
Authorized OfficialPeter Edward ZakiCo-owver · (559) 903-7489
Enumeration DateMarch 3, 2013
Last NPPES UpdateOctober 23, 2026
NPPES CertifiedOctober 23, 2026
✔ NPI 1366783268 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedFamily MedicineTaxonomy 207Q00000X
1515 E ALLUVIAL AVE, Fresno, CA 93720
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Other Identifiers 2

OtherFZ7704706CA · Family Medicine
OtherG80217CA · Internal Medicine

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Internal Medicine Specialists Medical Group, Inc. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

3

Medicare enrollment records show 3 clinicians reassign Medicare billing to Internal Medicine Specialists Medical Group, Inc., which bills Medicare for the services they deliver. Of these, 1 practice at this address and 3 within 10 miles. They are listed nearest first.

Clinicians, nearest first (3)

Mythe Laramie, M.D.
Internal Medicine
NPI 1801907399
1515 E ALLUVIAL AVE # 101
Fresno, CA 93720
(559) 435-0339
✔ PECOS✔ Accepts MedicareSame address
Steven Chooljian, M.D.
Internal Medicine
NPI 1245250232
1379 E HERNDON AVE
Fresno, CA 93720
(559) 435-2630
✔ PECOS✔ Accepts Medicare0.7 mi
Thomas Griffin, M.D.
Internal Medicine
NPI 1023038031
1379 E HERNDON AVE
Fresno, CA 93720
(559) 435-2630
✔ PECOS✔ Accepts Medicare0.8 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Internal Medicine Specialists Medical Group, Inc.'s NPI number?

The NPI number for Internal Medicine Specialists Medical Group, Inc. is 1366783268. It was assigned to this organization in the NPPES registry on March 3, 2013.

Where is Internal Medicine Specialists Medical Group, Inc. located?

Internal Medicine Specialists Medical Group, Inc. is located at 1515 E Alluvial Ave Suite 101, Fresno, CA 93720. The listed phone number is (559) 435-0339.

What is Internal Medicine Specialists Medical Group, Inc.'s specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Internal Medicine Specialists Medical Group, Inc. enrolled in Medicare?

Yes. Internal Medicine Specialists Medical Group, Inc. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Internal Medicine Specialists Medical Group, Inc.?

According to the CMS Revalidation Reassignment List (October 2026 release), 3 clinicians, all in Internal Medicine, reassign their Medicare billing to Internal Medicine Specialists Medical Group, Inc.. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Of these, 1 practice at this address and 3 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Internal Medicine Specialists Medical Group, Inc. was last updated on October 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.